JP2018169610A - Optical probe and assembly thereof - Google Patents

Abstract

A lens combination is provided that compensates for astigmatism caused by other optical components of an optical device.
A lens combination includes a first lens having a substantially planar first lens end surface defining an optical elliptical edge, and a substantially planar first lens operably connected to the first lens end surface. A second lens 40 having two lens end faces, the second lens having four main edges and at least two sub edges connecting a pair of main edges. Each extend substantially linearly between two spaced points at the elliptical edge of the first lens.
[Selection] Figure 2B

Description

[Cross-reference of related applications]
This application is filed on March 13, 2017, and is related to US Patent No. 9,069,122, filed March 13, 2013, US Provisional Application No. 62 / 470,693, and 2012. The claims of US Provisional Application No. 61 / 849,819, filed Oct. 12, are hereby incorporated by reference.

[Field of the Invention]
The present disclosure relates generally to optical devices and optical systems, and methods of manufacturing the same. In particular, the present disclosure relates to assemblies for providing compensation for astigmatism caused by optical components of optical devices and optical systems, as well as optical sensing of functions in internal tissue and illumination in internal tissue.

  Optical devices and optical systems are often used to deliver optical signals through the devices and systems and emit the optical signals toward a target. For example, an optical device delivers light supplied from an optical fiber through several optical components of the device, such as lenses and other transparent elements, such as transparent glass or plastic tubes, and then It may be used to radiate light so that it is focused at a predetermined location outside the device.

  In an optical device, the optical properties of an optical component that transmits light or reflects or refracts light determines the transmission properties of light emitted from the optical device. As is well known, light consists of a bundle of rays that propagate in two mutually orthogonal planes known as a tangential plane and a sagittal plane. When light propagates through the optical component of the optical device, due to the optical properties and geometry of the outer surface of the optical component, the above two planes of light emitted from the optical component are astigmatic. It can result in different focal lines or focal points known as aberrations.

  An optical device often comprises an optical component to compensate for astigmatism that is expected to be caused by other optical components of the device, thereby constituting the light emitted from the device The two planes of the light beam are focused on the same focal line or focal point. For example, an optical probe that operates to emit light that causes a focal line or beam waist to an external target location may include a transparent tube that passes when the light is emitted from the probe. This tube of the probe acts as an optical lens that causes astigmatism in the light passing through the tube. Thus, the optical probe comprises other optical components, such as optical prisms, through which light passes before passing through the tube, and the optical component compensates for the astigmatism that is expected to be caused by the tube. Aberration is caused in the light. That is, astigmatism caused by other optical components will result in the desired state of minimizing or eliminating the astigmatism of light emitted from the optical probe.

  There is still a need for an optical component that compensates for astigmatism caused by other optical components of the optical device and that can be manufactured relatively easily and inexpensively.

  A method of manufacturing an optical component includes the steps of providing a plate formed from a transparent material, the plate having a planar surface and depth, and first and second linear directions. Cutting the planar surface of the plate along the depth direction to define first and second planar surfaces, and cutting the planar surface of the plate along the bending direction in the depth direction, thereby Obtaining an optical component comprising: first and second planar surfaces; and a curved surface extending between an edge of the first planar surface and an edge of the second planar surface; It is good to contain. In one embodiment, the curved surface may extend from an edge of the first planar surface to an edge of the second planar surface.

  In one embodiment, the optical component may comprise substantially planar first and second surfaces and a curved surface. The first surface is relative to the second surface such that when the light beam is incident on the optical component at the second surface, the light beam is reflected at the first surface through the optical component. It is good to arrange at a predetermined angle. The predetermined angle may be an acute angle, for example, 45 °. The second surface may be specularly reflected to facilitate the reflection of light incident on the second surface through the optical component.

  The concave surface may have substantially opposite edges spaced apart along an axis extending perpendicular to the second surface, and arranged such that light reflected by the first surface is directed toward the concave surface. It is good to be. The edges facing each other may extend in a direction parallel to the longitudinal direction in which the concave surface extends, and the direction in which the edges facing each other extend is orthogonal to the axis on which the second surface extends. It may be. The concave surface may be configured such that the light beam reflected from the first surface is emitted from the curved surface, so that the first portions of the radiation beam in the first plane are substantially parallel to each other of the concave surface. Focusing to a first distance from an imaginary plane passing through the opposite edges, a second portion of the radiation beam in the second plane is focused to a second distance from the imaginary plane, and the first distance is Greater than 2 distances.

  The optical system may include a lens system through which the light beam is transmitted and a first optical component operably coupled to the lens system. The first optical component may include substantially planar first and second surfaces and a curved surface. The substantially planar first and second surfaces may be arranged to reflect a light beam passing through the optical component at the second surface. The second surface may be disposed at a predetermined angle with respect to the first surface. The curved surface may have substantially opposite edges spaced apart along an orthogonal axis passing through the second surface.

  The optical system may comprise a second optical component, which may be arranged such that the light beam emitted at the curved surface passes through the second optical component. The first and second optical components have a first astigmatism when the light beam passes through the first and second optical components and is emitted from the second optical component. A second astigmatism is generated in the light beam by the second optical component and is emitted from the second optical component by a combination of the first and second astigmatism. The light beam may be configured so that astigmatism does not occur substantially or not.

  According to one aspect of the present technology, the lens combination may include a first lens and a second lens. The first lens may have a substantially planar first lens end surface that defines an elliptical edge. The second lens may have a substantially planar second lens end surface operably connected to the first lens end surface. The second lens may have four main edges and at least two sub-edges connecting the main edge pairs. Each of the main edges may extend substantially linearly between two spaced points at the elliptical edge of the first lens.

  In some configurations, the entire second lens end surface may be disposed toward the first lens end surface.

  In some configurations, at least one of the secondary edges of the second lens end may be curved.

  In some configurations, the first lens and the second lens are configured such that a light beam emanating from the first lens at the first lens end surface is incident on the second lens at the second lens end surface. May be. In some such configurations, the second lens may further comprise a substantially planar second lens inclined surface and a second lens exit surface. The second lens end surface is disposed at a predetermined angle with respect to the second lens inclined surface so that the light beam incident on the second lens at the second lens end surface is reflected by the second lens inclined surface. It may be. The second lens exit surface may be arranged such that light reflected by the second lens tilt surface is directed toward the second lens exit surface.

  In some configurations, the second lens exit surface may be a concave surface that curves inward toward the interior of the second lens.

  In some configurations, the concave surface of the second lens may include first and second edges that are generally opposite each other. In some such configurations, the first and second edges generally facing each other may extend along the first and second axes, respectively, and the first axis is the second It may be in contact with the lens end face or in the same plane.

  In some configurations, the elliptical edge of the first lens end surface may be circular and the main edge of the second lens may extend along the respective main edge axis, The edge axes may intersect each other to define a square.

  According to another aspect of the present technology, the optical probe may include a lens combination, an optical fiber assembly including the optical fiber, and a cover that surrounds the optical fiber assembly in the circumferential direction. The lens combination may include a first lens and a second lens. The first lens may have a substantially planar first lens end surface that defines an elliptical edge. The second lens may have a substantially planar second lens end surface operably connected to the first lens end surface. The second lens may have four main edges and at least two sub-edges connecting the main edge pairs. Each of the main edges may extend substantially linearly between two spaced points at the elliptical edge of the first lens. In the optical fiber assembly and the lens combination, the light beam emitted from the optical fiber is incident on the lens combination at the incident surface of the first lens, passes through the first lens, and is emitted from the first lens at the first lens end surface. It is good to be configured.

  According to another aspect of the present technology, the optical probe may include a lens combination, an optical fiber assembly including the optical fiber, and a first cover that surrounds the optical fiber assembly in the circumferential direction. The lens combination may include a first lens and a second lens. The first lens may have a substantially planar first lens end surface that defines an elliptical edge. The second lens may have a substantially planar second lens end surface operably connected to the first lens end surface. The second lens may have four main edges and at least two sub-edges connecting the main edge pairs. Each of the main edges may extend substantially linearly between two spaced points at the elliptical edge of the first lens. In the optical fiber assembly and the lens combination, the light beam emitted from the optical fiber is incident on the lens combination at the incident surface of the first lens, passes through the first lens, and is emitted from the first lens at the first lens end surface. It is good to be configured. The first lens and the second lens may be configured such that a light beam emitted from the first lens is incident on the second lens at the second lens end surface. In some such configurations, the second lens may further comprise a substantially planar second lens tilt plane and a second lens exit plane. The second lens end surface is disposed at a predetermined angle with respect to the second lens inclined surface so that the light beam incident on the second lens at the second lens end surface is reflected by the second lens inclined surface. It is good to have. The second lens exit surface may be arranged so that light reflected by the second lens inclined surface is guided toward the second lens exit surface.

  In some configurations, the first cover may substantially surround the lens combination.

  In some configurations, the optical probe may further include a second cover that covers the first cover.

  In some configurations, the second cover may be a torque coil configured to apply torque to the optical probe such that the second lens rotates about a long axis defined by the optical fiber. .

  According to another aspect of the present technology, the optical probe may include an optical fiber assembly including an optical fiber, an optical component assembly, and a first cover that surrounds the optical fiber assembly in a circumferential direction. The optical component assembly may comprise a first optical component having a first end face and a second optical component operably coupled to the first optical component. The second optical component may have a second end surface facing the first end surface of the first optical component. The second end surface of the second optical component is applied to the first end surface of the first optical component by an adhesive that at least partially circumferentially surrounds the second end surface of the second optical component. It should be fixed. The first cover may surround the optical fiber assembly in the circumferential direction. An adhesive may secure the second optical component to the first cover.

  In some configurations, the adhesive may be bonded to the first cover.

  In some configurations, the first optical component and the second optical component are configured such that the light beam emanating from the first optical component at the first end surface is transmitted to the second optical component at the second end surface. You may be comprised so that it may inject. The second optical component may further include a substantially planar inclined surface and an exit surface. The second end surface may be arranged at a predetermined angle with respect to the inclined surface so that a light beam incident on the second optical component at the second end surface is reflected at the inclined surface. The exit surface may be arranged so that the light reflected by the inclined surface is directed towards the exit surface.

  In some configurations, the exit surface of the second optical component may be a concave surface that curves inward toward the interior of the second optical component.

  In some configurations, the first optical component may be a gradient index (GRIN) lens. In some such configurations, the optical probe may further comprise a glass spacer rod disposed in the first cover between the GRIN lens and the optical fiber.

  In some configurations, the optical probe may include a second cover that covers the first cover.

  In some configurations, the second cover is a torque coil configured to apply torque to the optical probe such that the second optical component rotates about a long axis defined by the optical fiber. Also good.

  According to another aspect of the present technology, the optical probe may include an optical fiber assembly, an optical component assembly, a first cover, a first adhesive, and a second adhesive. . The optical fiber assembly may comprise an optical fiber. The optical component assembly may comprise a first optical component and a second optical component. The first optical component may have a first end face. The second optical component may have a second end surface facing the first end surface of the first optical component. The second end surface of the second optical component is the first end of the first optical component by a first adhesive that at least partially surrounds the second end surface of the second optical component in the circumferential direction. It is good that it is firmly fixed to the end face. The first cover may be fixed to the optical fiber assembly and surround the optical fiber assembly in the circumferential direction. The second adhesive may secure the second optical component to the first cover.

  In some configurations, the first adhesive may be the same as the second adhesive. In some configurations, the first adhesive may be different from the second adhesive.

  In some configurations, the first adhesive may be bonded to the first cover.

  In some configurations, the first optical component and the second optical component are configured such that the light beam emanating from the first optical component at the first end surface is transmitted to the second optical component at the second end surface. You may be comprised so that it may inject. In some such configurations, the second optical component may further comprise a substantially planar inclined plane and an exit surface. The second end surface may be arranged at a predetermined angle with respect to the inclined surface so that a light beam incident on the second optical component at the second end surface is reflected at the inclined surface. The exit surface may be arranged so that the light reflected by the inclined surface is directed towards the exit surface.

  In some configurations, the exit surface of the second optical component may be a concave surface that curves inward toward the interior of the second optical component.

  In some configurations, the first optical component may be a GRIN lens. In some such configurations, the optical probe may further comprise a glass spacer rod disposed in the first cover between the GRIN lens and the optical fiber.

  In some configurations, the optical probe may further comprise a sheath. In some such configurations, the optical fiber may define a major axis. The first cover may define an opening that is radially offset from the major axis and located above the second optical component. In some such configurations, the sheath may cover the opening. In some such configurations, at least a portion of the sheath covering the opening may be flat. In some such configurations, the portion of the sheath covering the opening or the entire sheath may have a thickness in the range of 5-50 μm. In some configurations, the aperture may be located above the exit surface of the second optical component. In some configurations, the sheath may cover the distal end of the optical probe.

  In some configurations, the optical probe may further include a second cover that covers the first cover. In another configuration, the optical probe may further include a second cover that covers the first cover from below.

  In some configurations, the second cover may be a torque coil. In such a configuration, the torque coil may be configured to apply torque to the optical probe such that the second optical component rotates about a major axis defined by the optical fiber.

  In some configurations, the optical fiber may define a major axis. In such a configuration, the second cover may be configured to cover the end to prevent exposure of the second optical component at the end of the optical probe. In such a configuration, the long axis of the optical fiber may pass through the second cover.

  In some configurations, the first cover may include an inner sleeve and an outer sleeve secured to the inner sleeve and circumferentially surrounding the inner sleeve. In some such configurations, the first cover may further comprise a torque coil attached to the outer sleeve. In such a configuration, the torque coil may be configured to apply torque to the optical probe.

  In some configurations, the optical fiber may define a major axis. In such a configuration, the optical probe may further comprise a termination that defines an opening exposing the second optical component. In such a configuration, the long axis of the optical fiber may pass through the second cover.

  In some configurations, the optical fiber has a first optical configuration such that the first cover is spaced from the exposed surface of the optical fiber and forms a gap between the first cover and the exposed surface of the optical fiber. It may be attached to the element. In such a configuration, the gap may be defined by at least the exposed surface of the optical fiber, the first cover, and the first optical component. In some configurations, the gap may be filled with air.

  In some configurations, the first cover may comprise an inner sleeve and an outer sleeve. The inner sleeve may be secured to the outer sleeve by a third adhesive. The outer sleeve may surround the inner sleeve in the circumferential direction. The inner sleeve may be secured to the first optical component by a third adhesive. In such a configuration, at least the gap defined by the exposed surface of the optical fiber, the first cover, and the first optical component may be filled with a third adhesive or other adhesive.

  In some configurations where the first cover comprises an inner sleeve and an outer sleeve, the first adhesive and the third adhesive may be the same adhesive. In some such configurations, the second adhesive may be different from the first adhesive and the third adhesive.

  In some configurations, the optical probe may further comprise a glass spacer rod attached to the first optical component. In some such configurations, the optical fiber may further comprise a core, a cladding surrounding the core, and a jacket surrounding only the first portion of the cladding. In such a configuration, the spacer rod may be attached to a second part different from the first part of the core and the cladding.

  Hereinafter, although it is only an illustration, embodiment of this indication is described with reference to an accompanying drawing.

1 is a perspective view of an optical assembly. FIG. 1B is a perspective view of the optical assembly of FIG. 1A shown with respect to other optical components. FIG. FIG. 6 is a perspective view of another optical assembly in which optical components are omitted. FIG. 2B is a perspective view of the optical assembly of FIG. 2A with the optical components omitted in FIG. 2A. FIG. 5 is a perspective view of a plate from which a prism according to an embodiment of the present disclosure is cut off. 3B is a perspective view of a prism cut from the plate of FIG. 3A. FIG. It is a perspective view of the optical probe by one Embodiment. FIG. 4B is a cross-sectional view of the optical probe of FIG. 4A along line 4B-4B. It is sectional drawing of the optical probe by other embodiment. It is a perspective view of the optical probe by other embodiment. FIG. 5B is a cross-sectional view of the optical probe of FIG. 5A along line 5B-5B. It is sectional drawing of the optical probe by other embodiment. It is a perspective view of the optical probe by other embodiment. FIG. 7B is a cross-sectional view of the optical probe of FIG. 7A taken along line 7B-7B. It is a perspective view of the optical probe by other embodiment. FIG. 8B is a cross-sectional view of the optical probe of FIG. 8A taken along line 8B-8B. It is a sectional side view of the optical probe by other embodiment. FIG. 6 is a cross-sectional view of a distal portion of an optical probe according to another embodiment. FIG. 6 is a perspective view of an optical component assembly according to another embodiment. FIG. 8B is a cross-sectional view of the optical component assembly of FIG. 8A taken along line 8B-8B. FIG. 3 is a cross-sectional view of a portion of each optical system used in a patient's vasculature. FIG. 3 is a cross-sectional view of a portion of each optical system used in a patient's vasculature.

  An xyz coordinate system having an x-axis, a y-axis, and a z-axis that are orthogonal to each other is used in FIGS. 1A-3B and is referenced in the following description to describe the configuration of the optical components of the present disclosure. Will be. The x-axis, y-axis, and z-axis form an xy plane, an xz plane, and a yz plane. In addition, to describe the structural features of optical components extending in a direction parallel to or along the x-axis, y-axis, and z-axis, the x-axis line, The y-axis line and the z-axis line will be referred to respectively.

  The optical assembly 50 will be described with reference to FIGS. 1A and 1B. The optical assembly 50 includes an optical fiber 5, an optical lens system 10, and an optical component or prism 20. The lens system 10 may include one or more optical lenses (not shown) that transmit light supplied from the optical fiber 5 to the optical component 20. The optical component 20 is connected to the lens system 10 at the optical interface 15. The optical interface 15 is formed by the planar surface 17 of the lens system 10. The planar surface 17 faces and contacts the planar surface 29 of the optical component 20. The optical component 20 is made of a transparent material such as plastic or glass, and is a prism having a number of surfaces configured to reflect and emit light supplied from the lens system 10 in a predetermined direction. It is configured in the form.

  Referring again to FIGS. 1A and 1B, the optical component 20 is in the form of a triangular prism comprising a planar surface 29, a planar surface 27, and a planar surface 25. The surface 29 extends in a plane parallel to the xy plane. The surface 25 extends in a plane parallel to the xz plane. Surface 27 and surface 29 define an angle θ between them, for example 45 °.

  Hereinafter, the influence of the optical component 20 on the light emitted from the optical component 20 at the surface 25 through the optical component 20 will be described. For simplicity, it is assumed that the light beam I supplied from the fiber 5 to the lens system 10 is transmitted by the lens system 10 so as to propagate in the z-axis direction when incident on the surface 29 of the optical component 20. And the light beam I incident on the surface 29 of the optical component 20 is assumed to have no astigmatism. The light beam I incident on the surface 29 propagates through the optical component 20 to the surface 27 in the z-axis direction. Based on the incident angle of the light beam I at the surface 27 (angle θ with respect to the surface 29), the surface 27 reflects the beam I toward the surface 25 in the direction R (which is approximately the y-axis direction). The reflected light beam I is emitted from the optical component 20 at the surface 25. Here, it is further assumed that the reflected light beam I emitted at the surface 25 has no astigmatism.

  The light beam I emitted from the optical component 20 at the surface 25 is generated from light rays propagating in mutually orthogonal xy and yz planes represented by plane shapes A and B, respectively. As shown in FIG. 1A, since the surface 25 is planar, that is, not curved, the beam waist j, i, ie, the xy plane (planar shape A) and the yz plane (planar shape B). The locations where the beam spot size is minimized in each are at the same position.

  The arrangement of transparent elements 40, for example lenses, in the path of light emitted from the optical component 20 at the surface 25 will affect the emitted light. This effect depends on the shape and optical properties of the element 40. As shown in FIG. 1B, when a transparent element 40, such as a concave lens having concave surfaces 30, 32, is placed over the surface 25 of the optical component 20, the reflected light emitted at the surface 25 is reflected by the surface 30 and Radiation from element 40 at surface 32 passes through portion 31 between surfaces 30 and 32 of lens 40. As shown in FIG. 1B, when the light emitted on the surface 25 passes through the concave lens 40, the beam waist i in the yz plane (shape B) is more than the beam waist j in the xy plane (shape A). Close to the surface 25.

  When a lens having a curved surface, such as a concave lens 40, is disposed outside the first optical component of the optical device and the light emitted from the first optical component passes through the lens, the lens is the first optical component. The effect on the light emitted from the component is that the other second optical having the curved surface of the optical device before the light is emitted from the first optical component of the optical device toward the external lens. Compensation can be achieved by passing the component, ie, another lens. As described above (see FIG. 1B), the light emitted from the optical component 20 causes astigmatism due to the curved shape of the surfaces 30 and 32 of the lens 40.

  By providing another second optical component in the form of a lens having a curved surface through which the light passes before the light is emitted from the first optical component of the optical device toward the external lens, the first Astigmatism occurs in the light emitted from the optical component, and the astigmatism compensates for the astigmatism caused by the external lens, and thereby the light finally emitted from the optical system including the optical device and the external lens. Will produce minimal astigmatism or no astigmatism.

  In the embodiment shown in FIGS. 2A and 2B, the optical assembly 100 includes an optical component 150 having a concave surface 155. The optical assembly 100 is substantially similar to the optical assembly 50 except that the optical component 20 has been replaced with an optical component 150. The optical assembly 100 includes the same optical fiber 5 and optical lens system 10 and optical component 150 as in the optical assembly 50. The optical component 150 is similar to the optical component 20 except that the optical component 150 comprises a concave surface 155 as opposed to the planar surface 25. The optical component 150 is coupled to the lens system 10 at the optical interface 15. The optical interface 15 is formed by a planar surface 17 that contacts the planar surface 29 of the optical component 150.

  The concave surface 155 is a curved surface defined between a first edge 163 extending in the direction of the axis x1 and a second edge 165 extending in the direction of the axis x2. The curved surface 155 extends in the negative y-axis direction from each of the first and second edges 163 and 165 and inwardly away from the virtual xz plane V passing through the edges 163 and 165 of the component 150. A bulging concave plane is formed. Concave surface 155 has a longitudinal dimension extending in the direction of the x-axis, and axis x3 extends through a point of maximum depth along the longitudinal length of concave surface 155. In some embodiments of the optical component 150, the edge 163 of the concave surface 155 is also the edge of the planar surface 29. Thus, the concave surface 155 and the planar surface 29 share a common edge that extends linearly. The edge 165 of the concave surface 155 is also the edge of the planar surface 27. Accordingly, the concave surface 155 and the planar surface 27 share a common edge that extends linearly. Similar to the optical assembly 50, when the light beam I is incident on the surface 27 of the optical component 25 of the assembly 100, the light beam enters the component 150 and passes through the component 150 by the surface 27 to approximately a Reflected toward the concave surface 155 in the direction R, which is the direction.

  As shown in FIG. 2A, the concave surface 155 is such that the light emitted from the optical component 150 at the surface 155 is in the following characteristic: yz plane (represented by the planar shape C). The portion of the emitted light results in a beam waist k that is at a first distance D1 from the virtual xz plane V, and the portion of the emitted light that is in the xy plane (represented by the planar shape D) is The beam waist I is at a distance D2 of 2, and the first distance D1 is configured to be larger than the second distance D2. Specifically, the portion of the emitted light that is in the xy plane (represented by the planar shape D) propagates away from the surface 155 as a convergent beam portion that converges to the beam waist I at the second distance D2. Then, it propagates as a diverging beam portion from the second distance D2 to a distance (greater than the second distance D2 from the plane V). In other words, the portion of the emitted light in the xy plane (represented by the planar shape D) diverges as the distance from the surface 155 (the beam portion propagates further away from the distance D2) increases. It propagates as a beam part, ie a diffuse beam part. The portion of the emitted light that is in the yz plane (represented by the planar shape C) is away from the surface 155 as a converging beam portion that propagates from the surface V to the beam waist k after propagating a first distance D1. Propagate to. The first distance D1 from the surface 155 is greater than the distance that the portion of the emitted light in the xy plane (represented by the planar shape D) propagates before converging on the beam waist I. The first distance D1 from the surface V where the beam waist k in a portion in the yz plane is located is a function of the degree of concaveness of the surface 155. That is, the greater the degree of concaveness of the surface 155 in the negative y-axis direction, the greater the first distance D1. Conversely, the smaller the degree of concaveness of the surface 155 in the negative y-axis direction, the smaller the first distance D1.

  The degree of concavity of the surface 155 may be selected considering the curvature of the surface of the external optical component, for example, the curvature of the surfaces 30, 32 of the component 40 through which light emitted at the surface 155 passes. , Light emitted from the optical component 150 and passing through the external component 40 will be emitted from the component 40 with minimal or no astigmatism.

  As shown in FIG. 2B, the component 150 may include a curved surface 155, whereby the light beam emitted from the lens 40 is in the yz plane (planar shape C) and the xy plane. The beam waists k and I in the (planar shape D) are located at the same distance from the virtual plane V.

  In use, the optical component 100 may be used to illuminate an object or tissue. Medical use of the optical assembly 100 includes illumination of body tissue during minimally invasive surgical procedures. The optical assembly 100 may be configured such that the spot size of the light beam emitted from the assembly 100 corresponds to the tissue to be illuminated. In one embodiment, the light beam emitted from assembly 100 is elliptical and has a spot size of approximately 5 μm to 100 μm. In one embodiment, the assembly 100 may be configured such that the spot size of the emitted light beam facilitates illumination and identification of specific cells, eg, cancer cells.

  A method of manufacturing the optical component 150 will be described with reference to FIGS. 3A and 3B. As shown in FIG. 3A, a plate P, such as glass or polymer, is provided. The optical component 150 may be cut from the plate P. The shape of the optical component 150 is formed by cutting a desired shape from the plate P. The planar surfaces 27, 29 may be formed by using a tool such as a laser or other cutting tool that cuts into the plate P in the depth direction along the x-axis direction. Further, the concave surface 155 may be formed by cutting the plate P in the depth direction along the desired radius of curvature G in the x-axis direction using the same tool. In this manner, the shape of the optical component 150 is completely formed by cutting the plate P only in the depth direction along the x-axis direction. The manufacture of the optical component 150 can be easily performed by cutting the plate in the depth direction, and any additional cutting after removing the optical component 150 from the plate P following such cutting. Or there is no need to shape.

  4A and 4B, the optical probe 200 generally includes an optical fiber 205, a potting 209, a spacer 210, a first optical component 220 (in this example, a GRIN lens), a second Optical component 250 (in this example, but not limited to a prism lens), an inner cover 260 (in this example a sheath or tube), and an outer cover 265 (in this example a sheath or tube) The outer cover 270 (in this example, a sheath or tube) and an end cap 275 are provided.

  The optical fiber 205 is not limited, but may be a normal optical fiber. The optical fiber 205 may be formed by a core, a clad surrounding the core, and a jacket 206 surrounding the clad. The jacket 206 may be a coating, which may be, for example, but not limited to acrylic, urethane, or epoxy. In some constructions, this coating may be applied to the optical fiber cladding and cured when the optical fiber is manufactured. A portion of the jacket 206 may be stripped to expose the cladding. The portion of the optical fiber 205 covered by the jacket (including the exposed cladding portion of the optical fiber 205) penetrates the potting 209, is surrounded by the potting 209 in the circumferential direction, and may contact the surface 210A of the spacer 210. . The surface 210 </ b> A of the spacer 210 is substantially perpendicular to the long axis defined by the optical fiber 205. The potting 209 may be made from an adhesive, which is not limited and may be epoxy. Thus, when the adhesive is cured, the outer surface of the portion of the optical fiber 205 in the potting 209 matches the potting 209 and is firmly held by the potting 209. In this way, the potting 209 is self-adhering to the spacer 210, whereby the end face of the optical fiber 205 is held in contact with the spacer surface 210A. In addition, the optical fiber 205 is preferably fused to the surface 210A of the spacer 210, for example, by heating the optical fiber, before the potting 209 is applied around the optical fiber. In such a configuration, a portion of the jacket 206 is peeled off to expose the cladding of the optical fiber 205, and after the optical fiber is fused to the surface 210A of the spacer 210, the coating 207 (see FIG. 8B) is light. It may be applied to the fiber cladding. The coating 207 is not limited, but may be an epoxy, urethane, acrylic, or polyimide coating. In some such configurations, a large amount of coating 207 may be applied near the interface between optical fiber 205 and spacer 210 so that in that region the coating is along the coated cladding of the optical fiber. It may be thicker than anywhere (see, for example, FIG. 8B). Thus, the distal end of the optical fiber 205 is well supported, which prevents separation of the optical fiber from the spacer 210 during high speed rotation of the optical probe.

  In the illustrated example, the spacer 210 may be substantially in the form of a cylindrical rod and is transparent so that the light beam emitted from the optical fiber 205 is incident on and passes through the spacer surface 210A. There should be. In some configurations, the spacer 210 may be made of glass, but is not limited. The spacer 210 and the first optical component 220 may have end faces that are complementary to each other, i.e., facets that are inclined with respect to each of their long axes. Beam reflection of the emitted light beam to the optical fiber 205 can be reduced. Accordingly, as shown in the drawing, the mutually complementary end surfaces of the spacer 210 and the first optical component 220 may be in contact with each other. The first optical component 220 and the spacer 210 may be, for example, but not limited to, an adhesive, for example, but not limited to, an epoxy applied along end surfaces that are complementary to each other, or The end surfaces complementary to each other may be attached to each other by heating so as to fuse them together.

The second optical component 250 may be substantially the same as the optical component 150 described above, and therefore a second optical configuration having a reference number similar to the reference number of the feature of the optical component 150. The features of element 250 have essentially the same configuration and serve essentially the same purpose as the corresponding features of optical component 150. Thus, the light beam emitted from the optical fiber 205 passes through the spacer 210 and the first optical component 220, enters the second optical component 250 through the planar first surface 229, and is planar. The light is reflected on the inclined surface 227 and exits from the exit surface 255. The exit surface 225 may be a concave surface as in the illustrated example of the second optical element, or alternatively may be a planar surface. The first end of the second optical component 250 comprising and defining the first surface 229 is bonded to the optical interface surface, ie, the first optical, by an adhesive, for example, but not limited to, epoxy. It may be secured to the cut surface 215 at the end of the component 220 (opposite the end of the first optical component 220 having a surface complementary to the inclined end surface of the spacer 210). In some configurations, the planar inclined surface 227 may be coated with a reflective coating 231 to avoid the deposition of contaminants that may occur on the inclined surface. This allows the interface between the inclined surface and the reflective coating to completely or substantially completely internally reflect light impinging on the inclined surface from within the second optical component 250. Contaminants that can occur include adhesive coatings that cover reflective coatings that may be used to add mechanical strength. The coating 231 may be a polymer resin, such as, but not limited to, a dielectric thin film applied using well-known thin film deposition processes, or applied by vapor deposition techniques well known to those skilled in the art. It may be a metallized film. Such dielectric coatings may be made by, but are not limited to, polymers or combinations of polymers, and more preferably, such as a lamination process, such as a vapor deposition process or sputtering to form a vapor deposited film. It may be alternating layers of silicon dioxide (SiO ₂ ) and titanium dioxide (TiO ₂ ) or other metal oxides deposited by a simple physical vapor deposition (PVD) process. As a preferred configuration, the dielectric coating includes four alternating layers of SiO ₂ and TiO ₂ . Examples of suitable reflective metals for metallized coatings include, but are not limited to, aluminum, silver, and gold. In some other configurations, the planar inclined surface 227 may not be covered when the inclined surface is directly exposed to air, and in such an arrangement, the interface of the inclined surface to air is second. Complete or substantially complete internal reflection of light impinging on the inclined surface from within the optical component 250 of the optical component 250 can be achieved. Accordingly, the coating 231 may be provided such that the internal reflection at the planar inclined surface 227 is the same or substantially the same as when the coating is not present and the inclined surface is exposed to air. .

  As further shown in FIGS. 4A and 4B, the inner cover 260 extends along the length of a portion of the potting 209, spacer 210, first optical component 220, and second optical component 250. And surrounds them in the circumferential direction. As in the illustrated example, the inner cover 260 may be a thin tube, which in some configurations is a polymer resin, such as, but not limited to, heat for various components. It may be formed from shrinkable polyethylene terephthalate (PET) and an adhesive such as epoxy. In use, the portion of the PET tube that contacts other components may be coated with an adhesive. In this way, the inner cover 260 is adhered to all or at least a portion of the outer surface of each of the potting 209, the spacer 210, and the first optical component 220, thereby allowing the inner cover to adhere to these components. It should be merged. As a result, the potting 209, the spacer 210, and the first optical component 220 are fixed to each other and held in a state of being aligned straight in the axial direction along the common long axis.

  The outer cover 265 may be secured to the inner cover 260 or may be adhered to the inner cover 260 with an adhesive, for example, but not limited thereto. The adhesive is not limited, but may be a high strength adhesive such as a thermosetting epoxy, a urethane based adhesive, or an acrylic adhesive. The outer cover 265 may be, but is not limited to, a torque coil that receives the entire assembly of the optical probe 200 and applies torque to the entire assembly. This allows the outer cover 265 and consequently the optical probe 200 to rotate at a high speed of at least 10,000 rpm by the attached motor. In order to withstand this rotational speed, the outer cover 265 may have multiple wound coils, preferably two or more such wound coils wound in alternating directions. The outer cover 265 is not limited, but may be made of a metal such as stainless steel.

  As illustrated, the outer cover 265 may extend along only a portion of the inner cover 260. Thereby, the remainder of the inner cover 260 may be secured to the end cap 275 as shown. The outer cover 265 may also be secured to the end cap 275 with an adhesive, such as, but not limited to, epoxy. The end cap 275 may be formed of a polymer resin. The polymer resin may be, for example, a highly viscous resin, such as, but not limited to, a thermosetting epoxy, a urethane-based adhesive, or an acrylic adhesive. The end cap 275 extends beyond the second optical component 250 distally from the attachment to the inner cover 260 and surrounds the second optical component 250 except for the cap opening 276. It is good to be. The cap opening 276 has a diameter large enough to pass through the end cap 275 unimpeded by the light beam reflected from the planar inclined plane 227 of the second optical component 250 and exiting the exit surface 255. It is good to have. In addition, the cap opening 276 prevents the end cap from dropping off the second optical component 250 from the cap opening in the unlikely event that the second optical component 250 is detached from the attachment portion to the first optical component 220. It should have a sufficiently small diameter to prevent it.

  As shown, the adhesive 230 extends around a portion of the periphery of the first planar surface 229 of the second optical component 250 and one or more extending from the second optical component. The side surface 228, the planar inclined surface 227, and a part of the emission surface 225 may be covered. As shown in FIG. 4B, the adhesive 230 may spread on the inner surface of the inner cover 260 and be bonded to the second optical component 250 and the inner cover. This allows the inner cover 260 to position the second optical component 250 relative to the first optical component 220, particularly with respect to shear forces applied to the second optical component during high speed rotation of the optical probe 200. Will bring additional support to maintain.

  In some configurations, as illustrated, the outer cover 270 may extend along only a portion of the outer cover 265 and only along the largest diameter portion of the end cap 275. As further illustrated, the outer cover 270 may cover the cap opening 276. As a result, the outer cover 270 prevents the second optical component 250 from falling off the cap opening 276 in the unlikely event that the second optical component 250 is detached from the attachment portion to the first optical component 220. This will provide an additional barrier. The outer cover 270 does not function as a lens that exits the exit surface 255 of the second optical component 250 and unnecessarily focuses or diffuses light passing through the cover, i.e., known to those skilled in the art. It should be sufficiently thin so that such a “lens effect” is hardly or not produced at all.

  As shown in FIG. 4C, in an alternative configuration, the optical probe 200A is the same as or substantially the same as the optical probe 200, except that the optical probe 200A includes an adhesive 230A instead of the adhesive 230. is there. Unlike the adhesive 230, the adhesive 230 </ b> A substantially covers the second optical component 250 and is further bonded to the resin cap 275. In such a configuration where the adhesive 230A surrounds the inclined surface 227 of the second optical component 250, the second optical component either completely or internally reflects light at the inclined surface of the second optical component. In order to provide substantially complete, a reflective coating 231 covering the inclined surface may be provided.

  5A and 5B, the optical probe 300 is substantially the same as the optical probe 200 except that the optical probe 300 includes an outer cover 365 and an end cap 375 instead of the outer cover 265 and the end cap 275, respectively. Are the same. The outer cover 365 includes a plurality of holes 367A and 367B for inserting the adhesive (for example, but not limited to, epoxy adhesive, urethane adhesive, or acrylic adhesive). Otherwise, it is substantially the same as the outer cover 265. The end cap 375 is substantially the same as the end cap 275 except that it does not contact the inner cover 260. Alternatively, the end cap 275 may be pressure molded or glued into the outer cover 365 such that the end cap is held in position during translation and high speed rotation of the optical probe 300.

  As shown in FIG. 6, the optical probe 400 includes an inner cover 460, an outer cover 465, and an end cap 475, respectively, instead of the inner cover 260, the outer cover 265, the end cap 275, and the adhesive 230. , And having an adhesive 430, is substantially the same as the optical probe 200. Inner cover 460 is substantially the same as inner cover 260 except that inner cover 460 extends only along portions of potting 209 and spacer 210. The outer cover 465 is substantially the same as the outer cover 265 except that the outer cover 465 has an end surface 466 (disposed with respect to the long axis of the optical fiber 205) that surrounds the spacer 210 in the circumferential direction. The same. The end cap 475 extends proximally such that the end cap 475 circumferentially surrounds the spacer 210 and has an end surface 476 that is complementary to the end surface 466 of the outer cover 465 and the end cap 275. It is practically the same. Alternatively, the outer cover may extend distally to the first optical component 220 and the end cap may be shortened accordingly. In any alternative, the adhesive 430 may be applied so that the adhesive spreads proximally, contacts the inner cover 460, and is secured, as shown. This causes the adhesive 430 to provide greater support for the second optical component 250 during translation and high speed rotation of the optical probe 400. In some alternative configurations, the inner cover may extend to the first optical component 220 and, accordingly, provide additional support to the second optical component 250 while the inner cover You may shorten the distance extended to the proximal side of the adhesive agent 430 to such an extent that it contacts and adheres to a cover.

  In addition, as shown, the adhesive 430 fills a substantial portion of the space defined between the end cap 475 and the first optical component 220, thereby providing a second optical component. Great support for 250 may be provided. In some embodiments in which the adhesive 430 surrounds the inclined surface 227 of the second optical component 250, to provide complete or substantially complete internal reflection of light at the inclined surface of the second optical component 250. The second optical component may include a reflective coating 231 that covers the inclined surface. Furthermore, the complementary inclined end surfaces 466, 476 allow the outer cover 465 to apply torque to the end cap 475 during rotation of the outer cover in such a configuration.

  As shown in FIGS. 7A and 7B, the optical probe 500 includes the optical probe 400 except that the optical probe 500 includes an outer cover 565 and an end cap 575 instead of the outer cover 465 and the end cap 475, respectively. Is substantially the same. The outer cover 565 is substantially the same as the outer cover 465 except that the outer cover 565 includes an end surface 566 that defines a groove 567 instead of the end surface 466. End cap 575 includes end cap 475, except that end cap 575 includes end surface 576 instead of end surface 576, and end surface 576 includes a key 577 that is received in groove 567 in end surface 466 of outer cover 565. It is substantially the same. As a result, the outer cover 565 can apply torque to the end cap 575 during rotation of the outer cover.

  As shown in FIGS. 8A and 8B, the optical probe 700 includes the following points: the optical probe 700 does not include the potting 209 and the end cap 275, the inner cover 260, the end cap 275, and the outer cover 270. A combination of the inner cover 760 and the outer cover 770 instead of the combination of the above, a point of including the outer cover 765 instead of the outer cover 265, a point of including the optical fiber 705 instead of the optical fiber 205, The optical probe 200 is substantially the same as the optical probe 200 except that a first adhesive 730 is provided in place of the adhesive 230 and a second adhesive 735 is additionally provided. The inner cover 760 is substantially the same as the inner cover 260 except that the inner cover 760 functions as a sleeve that extends only around the spacer 210 and the first optical component 220. Similar to the inner cover 260, the inner cover 760 extends distally beyond the first optical component 220. The outer cover 770 is coated with an adhesive between the outer cover and the optical fiber, as described further below, except that it covers the entire inner cover 760 and directly covers the second optical component 250. For example, it extends along the distal portion of the outer cover 765 and directly covers the distal portion and directly covers the portion of the optical fiber 705 (without the jacket 706). Thus, the outer cover 770 becomes the outermost component at the distal end of the optical probe 700 that covers most of the end of the optical probe 700. As shown, the outer cover 770 defines an opening at its distal end, which, in contrast to the optical probe 200, exposes the optical probe 700 to its surrounding environment. This allows the inner cover 760, inner cover, spacer 210, and first optical component 220 combination, or inner cover, spacer, first optical component, and second optical component 250 combination to be It can be inserted through an opening defined in the distal end of the cover. The outer cover 765 is substantially the same as the outer cover 265 except that the outer cover 765 has a distal end surface 766 that substantially surrounds the optical fiber 705 (without the jacket 706). The outer cover 765 defines a step 767 at its distal end. The outer cover 770 extends over this step so that the outer cover and the outer cover form a continuous outer surface of the optical probe 700, i.e., an unbroken outer surface.

  In some configurations, as shown in FIG. 8B, the first adhesive 730 (which may be, but is not limited to, an epoxy adhesive, a urethane adhesive, or an acrylic adhesive) Is applied to the same region as the aforementioned region adjacent to the second optical component 220 and the second optical component 250, and is further applied to the distal side and substantially below the inclined surface 227. The reflective coating 231 (see FIG. 4B) of the optical component 250 may be coated, and may also be applied to the proximal side as shown. This causes the first adhesive 730 to secure a portion of the inner cover 760 or all of the inner cover 760 (as shown) to the spacer 210 and the first optical component 220 and the outer cover 770 to the inner side. The cover 760 is fixed, and the outer cover 770 is fixed to the outer cover 765. Still referring to FIG. 8B, the optical fiber 705 (without the jacket 706) may be secured directly to the spacer 210, or in an alternative configuration without a spacer, secured to the first optical component 220. Also good. The optical fiber 705 also has a thickness such that the outer cover 770 is spaced from the exposed surface of the optical fiber, and the optical fiber, outer cover, spacer (or alternatively the first optical component), and the outer cover 765. A gap may be formed between them. This gap, which is initially the gap during manufacture, allows for variations in the concentricity of the optical fiber 705 and spacer 210 and / or the diameter of the optical fiber and spacer.

  As shown, the entire gap may be filled with a second adhesive 735. The second adhesive 735 may be, but is not limited to, an epoxy adhesive, a urethane adhesive, or an acrylic adhesive, and in an alternative configuration may be an elastic filler material, such as an elastic polymer. . In addition, a first adhesive 730 may be applied between the second adhesive 735 and the outer cover 770. As in this example, the second adhesive 735 or elastic filler material may be softer than the first adhesive 730, i.e., more compressible. The use of adhesive in the gap will support the optical fiber 705 during rotation of the optical probe 700. In alternative configurations, the entire gap may be filled with the second adhesive 735 or elastic filler material, or the entire gap may be filled with the first adhesive 730. In yet other configurations, the gap may not be filled at all so that the gap is maintained as a gap. This avoids stresses caused by non-uniform forces acting on various regions along the optical fiber 205 and the first adhesive 730 by filling the gap with the second adhesive 735 or elastic filler. can do.

  Referring to FIG. 8B, in the manufacture of the optical probe 700, after stripping the fiber jacket 706 from a portion of the optical fiber, the distal portion of the optical fiber 705 is glued or fused to the proximal end of the spacer 210. It should be fixed. For example, the distal end of the optical fiber 705 may be fused to the proximal end of the spacer 210, preferably by welding or other high temperature heating methods. In other examples, adhesive may be applied around the optical fiber 705 and on the spacer 210, in which case the adhesive may be applied between the distal end of the optical fiber and the spacer, or anti-reflective. A membrane may be applied to either or both of the distal end of the optical fiber and the spacer. The first optical component 220 may then be secured to the spacer 210 or the second optical component 250 by an adhesive or by welding or other high temperature heating methods. The outer cover 765 may then be slid along the stripped and unstripped portions of the optical fiber 705. The inner cover 760 may then be slid proximally around the attached spacer 210 and first optical component 220. In some configurations, an adhesive, such as the first adhesive 730, may be pre-applied to either or both of the spacer 210 and the first optical component 220, thereby allowing the proximity of the inner cover. The top end is aligned with the spacer 210 straight. In this case, a first adhesive 730 in the form of a droplet may be applied to either the spacer 210 or the first optical component 220, in the illustrated example, through the hole 760A of the inner cover 760. . Thereafter, an additional first adhesive 730 may be applied to any or all of the outer surface of the inner cover 760, the step 767 of the outer cover 765, and the inner surface of the outer cover 770. The outer cover 770 may then be slid proximally around the inner cover 760 and the step 767 of the outer cover 765. However, in alternative configurations, the outer cover and inner cover may be formed as a single unitary component, similar to the combination of outer cover 770 and inner cover 760 shown in FIGS. 8A and 8B. The component will have various step regions. The outer cover 770 may include a hole 770A. The outer cover 770 is preferably arranged so that the hole is axially located between the distal end of the outer cover 765 and the proximal end of the inner cover 760. In this case, the step 767 of the outer cover 765 is as follows: the proximal portion (located proximal of the hole 770A) of the outer cover extends around the step of the outer cover. Accordingly, the outer cover and the outer cover may be dimensioned so as to form a continuous outer surface of the optical probe 700, that is, a discontinuous inner and outer surface.

  Additional first adhesive 730 or preferably second adhesive 735 passes through hole 770A by the exposed surface of optical fiber 705, outer cover 770, first optical component 220, and outer cover 765. It may be applied within a defined gap. In an alternative configuration of the optical probe 700 that lacks either or both of the holes 760A of the inner cover 760 and the holes 770A of the outer cover 770, the adhesive is applied to the combination of the spacer 210 and the first optical component 220, and to the optical fiber. 705 may be applied to the gap defined by the exposed surface of 705, outer cover 770, first optical component 220, and outer cover 765, respectively.

  In some configurations, the outer cover 770 may be made from a metal such as, but not limited to, stainless steel and various polymers such as, but not limited to, polyimide. When made from stainless steel or polyimide, the outer cover 770 may be machined to the desired shape, as best shown in FIG. 8A. In some configurations, the outer cover 770 may be molded around the outer cover 765. In some such configurations, the outer cover 770 and the inner cover 760 may be a unitary component in the form of a single continuous molded portion, and the outer cover 770 shown in FIGS. 8A and 8B and It may be in the same form as the combination of the inner cover 760. In some alternative configurations, for example, at a relatively low rotational speed, preferably lower than about 3000 rpm or about the same rotational speed, the outer cover may be configured to cover the outer cover instead of being configured to cover the outer cover. You may come to contact | abut to a position end.

  Referring to FIG. 9, the optical probe 800 is substantially the same as the optical probe 700 except that the optical probe 800 further comprises an end cap 875. In such a configuration, end cap 875 may be attached to the distal end of optical probe 700. As shown, the end cap 875 may be provided in the form of a transparent thin sheath that circumferentially surrounds the distal portion and distal end of the outer cover 770. As in this example, the end cap 875 is not limited (although it may be liquid-resistant at the highest pressures that occur in the bloodstream of humans or other organisms, optionally moisture-resistant, if desired). It may be made from polyethylene terephthalate (PET) or other plastic. During manufacture of the optical probe 700, the optical probe 800 may be formed by applying PET resin around the distal portion and distal end of the outer cover 770. The PET resin is then cured during heating of the optical probe 700. As a result, the PET resin is cured and contracted. As shown, during shrinkage, the cured PET resin covers the hole or opening, eg, the distal opening 777 defined at the distal end of the outer cover 770 or the side opening 776 of the outer cover 770. Form a flat area in the applied area. The thickness of the end cap 875 is preferably in the range of approximately 5 μm to approximately 50 μm, and more preferably approximately 10 μm. This prevents liquid material, and possibly moisture, from entering the outer cover 770 through the distal opening 777 or side opening 776 and at the same time minimizes interference with light emission through the end cap 875. It can be suppressed.

  As shown in FIG. 10, the optical probe 900 is substantially the same as the optical probe 800 except that the optical probe 900 includes an end cap 975 instead of the end cap 875. End cap 975 is substantially the same as end cap 875, except that the distal portion of end cap 975 is in the form of a tube. As shown, the tube portion of end cap 975 is constricted in the distal direction. In such a configuration, but not limited to, an adhesive 976, which can be an epoxy adhesive, a urethane adhesive, or an acrylic adhesive, is perfect for the liquid that the adhesive enters the end cap. It may be applied in the end cap 975 to provide a barrier. This allows end cap 975 to provide a strong barrier configured to withstand greater compressive forces at the distal end of optical probe 900 relative to end cap 875 of optical probe 800.

  Referring to FIGS. 11A and 11B, the second optical component 650 may be attached to the first optical component 220 and used in place of the second optical component 250 as shown. Good. The second optical component 650 includes a trapezoidal planar surface 629, a trapezoidal plane instead of the second optical component 650 replacing the planar surface 29, the planar surface 27, and the concave surface 155 of the optical component 150. Is substantially the same as optical component 150 except that it has a trapezoidal (tilted) surface 627 and a trapezoidal concave surface 155 and passes through the trapezoidal planar surface 627 orthogonal to the trapezoidal planar surface 629. There can further be a perimeter centered on a direction extending axis (larger than optical component 150). The trapezoidal planar surface 629 includes four major edges 681-684 and four minor edges 686-689 extending between each pair of major edges. In the configuration shown, the four major edges 681-684 have equal dimensions, and the four minor edges 686-689 also have equal dimensions. However, in alternative configurations, these edges may have different dimensions than at least some of their corresponding edges. Each end of the four sub-edges 686-689 intersects a point on the outer diameter of the first optical component 220 when the second optical component 650 is properly aligned with the first optical component. This causes the entire contour of the second optical component 650 to be located within the optical interface surface 215 of the first optical component. Thereby, a larger opening (indicated by the inscribed circle 690) provided by the planar surface 29 of the optical component 150 is formed by the trapezoidal planar surface 629 of the second optical component 650. As a result, more light is incident on the second optical component 650 at the planar surface 629 than from the first optical component 220 on the surface 29 of the optical component 150. Desirably, the trapezoidal exit surface 655 may have a predetermined trapezoidal shape relative to the concave surface 155 of the optical component 150, and the trapezoidal inclined surface 627 may have a predetermined trapezoidal shape relative to the inclined surface 27. The emission surface 655 may have a predetermined concave shape. Accordingly, all or substantially all of the light incident on the planar surface 629 exits the second optical component 650 at the exit surface 655, thereby entering the second optical component at the planar surface 629. Thus, the amount of light emitted from the second optical component can be maximized.

  In use, any such optical probe that uses the second optical component 650 in place of the optical probe 200, 300, 400, 500, 700, 800, 900 or the second optical component 250 may be an object or It may be used to illuminate tissue. In some configurations, the optical probe 200 is used to illuminate body tissue required for some medical procedures, such as optical interference imaging (OCT) techniques or other medical imaging techniques during minimally invasive surgical procedures. Good. During such a procedure, the optical probes 200, 300, 400, 500, 700, 800, 900 pass through the catheter (catheter tube), preferably without causing friction with the catheter, such as body tissue, eg blood vessels. And rotated by a rotary joint or other mechanical connection. The optical probes 200, 300, 400, 500, 700, 800, 900 may be configured such that the spot diameter of the light beam emitted from the probe corresponds to the tissue that is desired to be illuminated. In one configuration, the light beam emitted from the probes 200, 300, 400, 500, 700, 800, 900 may be elliptical and may have a spot diameter between approximately 5 μm and 100 μm. In one embodiment, the probes 200, 300, 400, 500, 700, 800, 900 are configured such that the spot diameter of the emitted light beam facilitates illumination and identification of specific cells, eg, cancer cells. It is good to be.

  Referring to FIG. 12, in one example, the optical probes 200, 800, 900 may be part of the respective optical systems 1000A, 1000B, 1000C. Within optical system 1000A, 1000B, 1000C, each optical probe may be inserted into a tube of catheter 1010 and attached to connector / motor assembly 1020. The connector / motor assembly 1020 may include an optical connector 1025 for transmitting the light beam to the respective optical probes 200, 800, 900. In addition, the connector / motor assembly 1020 may provide a rotational force to the outer cover 765 to rotate the attached optical components 250, 650. Thereby, in this example, the optical probes 200, 800, 900 will facilitate illumination of the artery 99 to identify an abnormality of the artery 99, as described above. The optical probe 200 includes an outer cover 270, and the optical probes 800 and 900 include end caps 875 and 975, respectively, so that the cleaning fluid passes through the side tube 1012 of the catheter. As in the illustrated example added within the catheter 1010, it can operate in a liquid or humid environment.

  Referring to FIG. 13, in another example, optical probes 200, 300, 400, 500, 700, 800, 900 are substantially similar to optical systems 1000A, 1000B, 1000C except that they include a catheter 1110 instead of catheter 1010. It may be part of another optical system that is similar in nature. Catheter 1110 is substantially the same as catheter 1010 except that catheter 1110 includes a tip 1111. The tip 1111 separates the optical system from the liquid or moisture environment of the artery 99 outside the catheter, as shown, and is generally characterized in that it does not include a side tube, such as the side tube 1012 of the catheter 1010. is there.

  It is further to be understood that the disclosure contained herein includes any possible combination of the specific features described above, whether or not specifically disclosed herein. . For example, if a particular feature is disclosed in connection with a particular aspect, arrangement, configuration, or embodiment, that feature is, wherever possible, another particular aspect, arrangement, configuration, and It may be used in combination with and / or in association with embodiments and generally in the art.

  Further, although the technology herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the technology. Therefore, it should be understood that many modifications may be made to the illustrated embodiments and that other configurations may be devised without departing from the spirit and scope of the technology. In this regard, the technology includes many additional features in addition to the specific features set forth in the following claims. Furthermore, the foregoing disclosure should be considered as being illustrative rather than restrictive. This is because the technology is defined by the appended claims.

Claims (27)

A lens combination,
A first lens having a substantially planar first lens end surface defining an elliptical edge;
A second lens having a substantially planar second lens end surface operably connected to the first lens end surface, wherein the second lens has a pair of four main edges and the main edge. At least two sub-edges connected, each of the main edges extending substantially linearly between two spaced apart points at the elliptical edge of the first lens. A second lens,
A lens combination.   2. The lens combination according to claim 1, wherein the entire second lens end surface is disposed toward the first lens end surface.   The lens combination according to claim 1, wherein at least one of the sub-edges of the second lens end surface is curved. The first lens and the second lens are configured such that a light beam emitted from the first lens is incident on the second lens at the second lens end surface. And the second lens is
The second lens inclined surface is a substantially flat surface, and the second lens end surface reflects a light beam incident on the second lens at the second lens end surface on the second lens inclined surface. A substantially planar second lens inclined surface disposed at a predetermined angle with respect to the second lens inclined surface;
A second lens exit surface, wherein the second lens exit surface is disposed such that light reflected by the second lens tilt surface is directed toward the second lens exit surface;
A lens combination.   The lens combination according to claim 4, wherein the second lens exit surface is a concave surface that curves inward toward the inside of the second lens.   The concave surface of the second lens includes first and second edges that are substantially opposite to each other, and the first and second edges that are substantially opposite to each other are on first and second axes, respectively. 6. The lens combination according to claim 5, wherein the lens combination extends along the first axis and is in contact with or coplanar with the second lens end face.   The elliptical edge of the first lens end surface is circular, the main edge of the second lens extends along each main edge axis, and the main edge axis has a square shape. The lens combination of claim 1, wherein the lens combinations intersect each other to define. An optical probe,
A lens combination according to claim 1;
An optical fiber assembly comprising an optical fiber, wherein the optical fiber assembly and the lens combination are such that a light beam emitted from the optical fiber is incident on the lens combination at an incident surface of the first lens. An optical fiber assembly configured to pass through a lens and exit from the first lens at the first lens end face;
A cover that circumferentially surrounds the optical fiber assembly;
An optical probe. An optical probe,
A lens combination according to claim 4;
An optical final assembly comprising an optical fiber, wherein the optical fiber assembly and the lens combination are such that a light beam emitted from the optical fiber is incident on the lens combination at an incident surface of the first lens. An optical fiber assembly configured to pass through a lens and exit from the first lens at the first lens end face;
A first cover that circumferentially surrounds the optical fiber assembly;
An optical probe.   The optical probe of claim 9, wherein the first cover substantially surrounds the lens combination.   The optical probe according to claim 9, further comprising a second cover that covers the first cover.   12. The torque coil of claim 11, wherein the second cover is a torque coil configured to apply torque to the optical probe such that the second lens rotates about a long axis defined by the optical fiber. The optical probe as described. An optical probe,
An optical fiber assembly comprising an optical fiber;
An optical component assembly comprising: a first optical component having a first end surface; and a second optical component having a second end surface opposite the first end surface of the first optical component. Wherein the second end surface of the second optical component is formed by the first adhesive at least partially surrounding the second end surface of the second optical component. An optical component assembly secured to the first end surface of the optical component;
A first cover secured to the optical fiber assembly and circumferentially surrounding the optical fiber assembly, wherein a second adhesive secures the second optical component to the first cover. A first cover;
An optical probe.   The optical probe according to claim 13, wherein the first adhesive is bonded to the first cover. The first optical component and the second optical component are configured such that a light beam emitted from the first optical component at the first end surface is transmitted to the second optical component at the second end surface. The second optical component is configured to be incident,
A substantially planar inclined surface, wherein the second end surface is relative to the inclined surface such that a light beam incident on the second optical component at the second end surface is reflected at the inclined surface. A substantially planar inclined surface disposed at a predetermined angle;
An exit surface, wherein the exit surface is arranged such that light reflected by the inclined surface is directed toward the exit surface;
The optical probe according to claim 13, further comprising:   The optical probe according to claim 15, wherein the exit surface of the second optical component is a concave surface that curves inward toward the interior of the second optical component.   The first optical component is a GRIN lens, and the optical probe further includes a glass spacer rod disposed in the first cover between the GRIN lens and the optical fiber. The optical probe according to claim 15.   And further comprising a sheath, wherein the optical fiber defines a major axis, and the first cover is located above the exit surface of the second optical component offset radially from the major axis. The optical probe of claim 15, wherein the optical probe defines an opening, and the sheath covers the opening.   The optical probe according to claim 18, wherein at least a part of the sheath covering the opening is flat.   The optical probe according to claim 13, further comprising a second cover that covers the first cover from above or from below.   The second cover is a torque coil configured to apply torque to the optical probe such that the second optical component rotates about a major axis defined by the optical fiber. 21. The optical probe according to 20.   The optical fiber defines a major axis, and the second cover is configured to cover the end to prevent exposure of the second optical component at the end of the optical probe; 21. The optical probe according to claim 20, wherein the major axis of the optical fiber penetrates the second cover.   The optical probe according to claim 13, wherein the first cover includes an inner sleeve and an outer sleeve fixed to the inner sleeve and surrounding the inner sleeve in a circumferential direction.   24. The first cover of claim 23, further comprising a torque coil attached to the outer sleeve, wherein the first torque coil is configured to apply torque to the optical probe. Optical probe.   The optical fiber is attached to the first optical component such that the first cover is spaced from an exposed surface of the optical fiber and forms a gap therebetween, the gap being at least The optical probe of claim 13, defined by the exposed surface of the optical fiber, the first cover, and the first optical component.   The first cover includes an inner sleeve, and an outer sleeve that is fixed to the inner sleeve by a third adhesive and surrounds the inner sleeve in a circumferential direction. 26. The optical probe of claim 25, wherein the optical probe is secured to the first optical component with an adhesive and the gap is filled with the third adhesive.   The first adhesive and the third adhesive are the same adhesive, and the second adhesive is different from the first adhesive and the third adhesive. 27. The optical probe according to 26.

Images